Hair-clipper



(No Model.) K" PRIEST.

HAIR GLIPPBR. 180.393,45). Patented Not/ZZ?, 1888..

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' UNITED STATES PATENT CEETCE.

JOSEPH PRIEST, OF NASHUA, NEV HAMPSHIRE.

' HAI R-CLIPPER.

SPECIFICATION forming part of Letters Patent No. 393,450, dated November27, 1888.

Application tiled June 1983. Serial No. 278.527. (No model.)

To @ZZ whom, it may concern:

Be it known that I, JosEPH K. PRIEST, a citizen of the United States,residing at Nashua, in the county of Hillsborough and State of NewHampshire, have invented certain new and useful Improvements inHair-Clippers; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to makeand use thesame.

My invention consists of certain novel constructions, arrangements, andcombinations of parts in a hairclipper, as will be hereinafter describedand specifically claimed, whereby certain imperfections in the same areremedied andagreatly-improvedimplementisproduced.

In the accompanying drawings, Figure l is a top View of my hair-clippercomplete. Fig. 2 is a bottom view of a portion of the clipper, thebottom cutter-plate being removed in order to expose the construction ofparts above said plate. Fig. 3 is a section in the line xx, and Fig. 4ta section in the line y y, of Fig. l. Fig. 5 is a section in the line zz of Fig. 2.

The letter A in the drawings represents the stationary handle or arm ofmy hairclipper; B, the oscillating handle or arm; C, the housing; D, thecenter pivot-bolt; and E F, upper and under cutter-plates.

The stationary handle or arm A and housing C are formed in one piece andprovided with an interior tubular center bearing, c, which is cast withthe housing and into which a tubular fulcrum-bcaring, VI), of the handleor arm B is fitted, said bearing b being cast integral with the handleor arm B. rlhe lower portion o'f the bearing c is provided with aflanged tubular end piece, c,which is screwed thereon or otherwiseattached to it, and by its iiange c2 holds up'a spring, b',which isaround the center bearing, c, and prevents it from slipping down andbearing upon the handle or arm B. The upper end portion, b", of thespring ii is located in the housing C at c3, as shown in Fig. 4, and thelower end portion, bi", of said spring is passed through the swivelheadb",at the end of a set-screw,b,in the arm B, as shown in Figs. 1 and 2,by means of which the tension of the spring b may be increased ordecreased at pleasure, to suit the convenience of the operator. Thehandle or arm Bis provided with a head, b4, which is fitted into a slot,c, of the cutter E, and thereby communicates motion to the same.

The oscillatory motion of the head b* causes a reciprocating motion ofthe cutter-plate E by means of two lugs, 0*, formed ou the lower surfaceof the housing G and placed and fitted into straight guiding slots e ofthe cutter-plate E. The cutterplate Eis clamped in position between thelower front surface, c5, of the housing C and the upper surface ofthecutter-plate F, which latter is drawn up by means of the centerpivot-bolt, D, and nut d, and thus the serrated cutting portions of bothcutter-plates are kept in Contact, which contact is relieved of therigidity which the bolt and nut alone would cause by an interposedspring, d', which is inserted into atubular housing, d2, of the nut d,so as to encircle the pivot-bolt D very loosely. This spring exerts itstension vertically against the housing C and nut d, and thus draws thecenter pivot-bolt, D, and cutter-plate F upward with a yielding force,which keeps the said parts in working position, and yet permits them toyield to any undue resistance offered to the cutterplates. The nut d iskept in line with the center pivot-bolt, D, by means of a circularprojection or flange, c, of the housing C,whieh fits around the lowerportion of the nut. The spring d is prevented from turning by means of avertical end portion, d, thereof,which is insert-ed in a socket, cl, ofthe housing. The cutter-plate Fis held steady by means of two lugs orprojections, es, on the lower surface of the housing, which projectionsare entered snugly into two holes, f, of the cutter-plate F.

From the drawings, Figs. 1,2, 4, and 5, it will be seen that a verticalbalancing heel-lug, c, is formed at the center of the rear portion ofthe housing C, and that said lug bears centrally on the lowercutter-plate, F, and keeps said housing out of contact with said platesE and F, except where it bears along its entire marginal under frontedge surface at ci upon the said upper cutterplate. By this constructionit will be seen that the pressure of the narrow bearingsurlhce at ciupon the reciprocating cutter-plate Eis equally divided from one end tothe other, this being due to the fact that a triangular bearing-contactis secured between the lower cutter-plate, F, and the IOO housing C, thetwo end portions of the narrow front bearing-surface, c5, of thereciprocating cutter and the lug t9 insuring such contact when a centralpressure is applied by means of the screw, said pressure being equallydistributed and sustained at all three points, and the pressure in thisease being applied against the spring d a capability of yielding toundue friction is afforded.

It will be seen that the spring d', by being prevented from movingaround in the housing d'l of the nut d,will not become loose when thehair-clipper is used; and by having lugs c4, c5, and c formed With andon the housing C the mechanism is rendered steady, reliable, anddurable, without requiring frequent repair; whereas with pins insertedinto the housing, as heretofore, the moving parts and pins rapidlybecome loose and render the instrument inoperative until repaired. Inknown con structions the spring I/ has been found to crowd downward uponthe handle orarni B, and thereby cause the fnlcrum portion of said armor handle to cramp the lower cutter-plate, F, and thus subject it toundue wear while moving against the hardened cutter plate E below andthe spring b above. In my present construction the spring b is held awayfrom the said fulcrum portion by the flange c2 of the end piece, c', andthis imperfection remedied.

It is obvious that the socket c7, as illustrated by dotted lines, may bein nut d, instead of in the housing, and secure the saine result.

'Vhat I claim isl. The hair-clipper comprising a fixedlyheld spring, d',handle A, housing C, having tubular bearing c. handle B, having tubulari'ulcrum bearing b, cutter plates E F, center screwthreaded pivot-bolt,D, and nut d, in

closing and binding vertically upon said spring d', substantially asdescribed.

2. The hair-clipper comprising the handle A, housing G, havingr tubularbearing c and lug c4 cast with it, cutter-plate E, having tubularfulcrum-bearing b and slots e', cutter-plate F. center screw-threadedpivot-bolt,D, springs b' d', and nut d, substantially as described.

t 3. The hair-clipper comprising handle A, having housing C, withtubular bearing c and steadying-lugs es east with it, the cutter-plateF, having guide-holes f for the lugs, the cutter-plate E, having tubularfulerum-bearing b, central screw-threaded pivot-bolt, D, springs b' d',and nut d, substantially as described.

4. The hair-clipper comprising handle A, having housing C, with centralrear balancinglug, c", lugs c, projecting pins c, transverse front edgebearing, c5, the cutter plates E F, having, respectively, slots e' andholesf, center pivot-bolt, D, springs b d', and nut d, substantially asand for the purpose described.

5. The hair-clipper comprising the handle A, having housing C, withtubular bearing c, the spring b. secured by its end c3 to housing C,handle B, having tubular fnlerum-bearing b, and set-screw b, havingswivel-head b5, with lower end, b, ofthe spring passed through it,substantially as described.

6. The housing C, having tubular bearing c and flanged end piece, c', incombination with spring b', set-screw b, and handle or arm B,substantially as and for the purpose set forth.

In testimony whereofI hereunto affix my signature in presence of twowitnesses.

JOSEPH K. PRIEST.

Vitnesscs:

R. T. SMITH, ANNETTE M. Mom/ros.

